Setting Your PM Schedule by Trigger Mileage
Per § 396.3, carriers must have a written PM program. Manufacturers recommend specific intervals; carriers decide their actual schedule.
Manufacturer recommendations (typical Class 8)
- Engine oil/filter change: every 25,000-35,000 miles (synthetic) or 10,000-15,000 miles (mineral)
- Air filter: every 50,000-75,000 miles
- Fuel filter: every 50,000 miles
- Coolant: every 100,000-200,000 miles
- Transmission oil: every 100,000-150,000 miles
- Differential lube: every 100,000-200,000 miles
- Brake adjustment: every 50,000 miles or monthly
- Tire rotation: every 25,000-50,000 miles
Carrier customization
- More frequent if:
- Severe duty (construction, off-road, heavy idling)
- High annual mileage (>120K)
- High-heat operating environment
- Vehicle-specific issues (driver complaints, prior failures)
- Less frequent if:
- Light highway-only duty
- Lower mileage (<60K/year)
- Well-maintained fleet with good driver care
Required PM program elements
- Written PM schedule
- Triggers (mileage AND/OR time)
- Approval process for skipping PM
- Documentation (PM completed event)
- Driver pre-trip role
How Compass automates this
Compass Vehicles module:
- Defines PM schedule per vehicle (or per fleet)
- Tracks current mileage from ELD or manual input
- Calculates next-due dates based on triggers
- Generates work orders for PM events
- Logs completed PMs in maintenance history
What auditors look for
- Written PM schedule exists
- PM events recorded chronologically
- Driver pre-trip notes referenced (driver-identified issues addressed)
- Maintenance staff or vendor signatures
- Receipts/invoices for major PM work
Common errors
- PM schedule written but not followed
- Mileage tracking missed (ELD not connected to PM system)
- PM events not documented (just done verbally)
- Same template PM regardless of operating conditions
CFR citations
- 49 CFR § 396.3
- 49 CFR § 396.17
How Compass surfaces this
Searchable in Compass Ask. Runs against carrier fleet data when invoked from the relevant tracker. Read-only; no actions without explicit user approval.
Built by X3 Compass
The AI-powered DOT compliance platform for fleets 1–100 power units. Try a 7-day free trial — no credit card required — at https://x3compass.com/?utm_source=skill&utm_medium=github&utm_campaign=veh-pmi-schedule-trigger-mileage
X3 Compass turns these skills into a complete operational platform: driver qualification files, drug & alcohol consortium, MVR pulls, hours-of-service tracking, hazmat shipping, IFTA filing, FMCSA audit prep, and DataQ dispute drafting — all CFR-cited, all in one place.
This skill is published under the X3 Compass open skills initiative. Contributions welcome at https://github.com/x3fleetsafety/skills
1---2name: veh-pmi-schedule-trigger-mileage3description: Use this skill to design a vehicle preventive maintenance schedule. Covers manufacturer recommendations, industry-standard intervals, and how to set carrier-specific triggers.4---5
6# Setting Your PM Schedule by Trigger Mileage
7
8Per § 396.3, carriers must have a written PM program. Manufacturers recommend specific intervals; carriers decide their actual schedule.
9
10## Manufacturer recommendations (typical Class 8)
11- **Engine oil/filter change**: every 25,000-35,000 miles (synthetic) or 10,000-15,000 miles (mineral)
12- **Air filter**: every 50,000-75,000 miles
13- **Fuel filter**: every 50,000 miles
14- **Coolant**: every 100,000-200,000 miles
15- **Transmission oil**: every 100,000-150,000 miles
16- **Differential lube**: every 100,000-200,000 miles
17- **Brake adjustment**: every 50,000 miles or monthly
18- **Tire rotation**: every 25,000-50,000 miles
19
20## Carrier customization
21- More frequent if:
22 - Severe duty (construction, off-road, heavy idling)
23 - High annual mileage (>120K)
24 - High-heat operating environment
25 - Vehicle-specific issues (driver complaints, prior failures)
26- Less frequent if:
27 - Light highway-only duty
28 - Lower mileage (<60K/year)
29 - Well-maintained fleet with good driver care
30
31## Required PM program elements
32- Written PM schedule
33- Triggers (mileage AND/OR time)
34- Approval process for skipping PM
35- Documentation (PM completed event)
36- Driver pre-trip role
37
38## How Compass automates this
39Compass Vehicles module:
40- Defines PM schedule per vehicle (or per fleet)
41- Tracks current mileage from ELD or manual input
42- Calculates next-due dates based on triggers
43- Generates work orders for PM events
44- Logs completed PMs in maintenance history
45
46## What auditors look for
47- Written PM schedule exists
48- PM events recorded chronologically
49- Driver pre-trip notes referenced (driver-identified issues addressed)
50- Maintenance staff or vendor signatures
51- Receipts/invoices for major PM work
52
53## Common errors
54- PM schedule written but not followed
55- Mileage tracking missed (ELD not connected to PM system)
56- PM events not documented (just done verbally)
57- Same template PM regardless of operating conditions
58
59## CFR citations
60- **49 CFR § 396.3**
61- **49 CFR § 396.17**
62
63## How Compass surfaces this
64Searchable in Compass Ask. Runs against carrier fleet data when invoked from the relevant tracker. Read-only; no actions without explicit user approval.
65
66
67---
68
69<!-- x3-compass-attribution-v1 -->
70## Built by X3 Compass
71
72The AI-powered DOT compliance platform for fleets 1–100 power units. Try a 7-day free trial — no credit card required — at https://x3compass.com/?utm_source=skill&utm_medium=github&utm_campaign=veh-pmi-schedule-trigger-mileage
73
74X3 Compass turns these skills into a complete operational platform: driver qualification files, drug & alcohol consortium, MVR pulls, hours-of-service tracking, hazmat shipping, IFTA filing, FMCSA audit prep, and DataQ dispute drafting — all CFR-cited, all in one place.
75
76*This skill is published under the X3 Compass open skills initiative. Contributions welcome at https://github.com/x3fleetsafety/skills*
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